Coating Raw Material Coating Type Zinc plated Black zinc plated Raw Material Hardened steel Stainless Steel A2 Stainless Steel A4 DDKFK 2,24,30,51,302,95,50,71,713,56,80,82,123,97,50,92,324,28,112,524,89,51,2325,510,81,33,436,312,41,43,83